Commutator.



W. G. VIALL.

OOMMUTATOR.

APPLICATION FILED AUG. 12, 191-2 1,060,722, mama May 6,1913.

QXMM a '9 V I cm Wz'ZZzkem (XII /052K 97/24M9VM y%ifmzmawm- MWM UNITED STATES PATEN T OFFICE. WILIQIAM G. VIALL, F BRIDGEPORT, CONNECTICUT, ASSIGNOR Tb THE IVES MANU FACTUBING CORPORATION, OF BRIDGEPGI3;T,. C(ZQNNECTICUT, A CORPORATION OF CONNECTICUT.

'b coumuma'ron.

Patented May 6, 315913.

To all :whom it may concern. I r

Be it known that I, WILLIAM G. VIALL, citizen of the United States, and resident of Bridgeport, in the county of F airfield and State of Connecticut, have invented certain new and useful'lmprovements' in Commutators, of which the following'is a specification. V

My invention relates to improvements in commutators and refers particularly to that class of commutators shown and described in my prior Patent #1,018,141.

The object of the invention is to improve upon commutators by producing a simplified and inexpensive form of device which is-made of a very small number of sheet metal and other stamped parts of insulating material as for instance fiber in a manner which will permit the same to bereadily assembled and secured, together in a simple and practical way; to design and arran e the parts so that when assembled, there Wi 1 be a clear space a between the edge portions of the commutator segments, and further so that an open hollow s ace 1) will be formed within, the hub pr need by the assembled segments.

The invention further resides and consists in the construction and novel combination and arrangement of parts hereinafter more fully described, illustrated in the accom panying drawings, and pointed out in the claims hereto appended, it being understood that various changes in the form, proportion, size and minor details of construction within the scope of the claims may be resorted to without departure from the s irit ,or sacrificing any of the advantages 0 the.

invention.

Similar characters of reference denote like or corresponding parts throughout the several figures of the accompanying drawings forming a partof this specification, and upon which, v

Figure 1, shows a perspective viewof my im roved form of commutator shown at- .tac ed'to the shaft of a rotary armature.

Fig. 2, is an enlarged side view of the said commutator, shown mounted upon a portion of the shaft seen in Fig. 1. Fig. 3, is a central vertical longitudinal section through the commutators shown in Figs. land 2. Fig. is an end view of the commutator,

as seen from the left in Fig. 2. Fig. 5, is an end view of the same commutator, as

seen from the right of Fig. 2, and 6,

is a detached'plan view of one of the metal segment blades for connectingthe insulating end flanges of the commutator as will later be more fully ex lained.

Referring in etfail to the characters of reference marked upon the drawings, represents an ordinary motor shaft, and 11 the rotary armature mounted thereon having the usual or any preferred form of windings 12, wound upon the several arms of the armature and having the ends of the 7 respective windings secured to the terminals 13 of the commutator. The commutator is formed separate and independent of the armature or its shaft and is secured to the latter by being forced and frictionally held thereon. v U

The commutator shown in the drawings .is formed of six pieces, three sheet metal members 17, two insulating disks 14 and a bushing 21. The insulating disksform the end flanges of the spool, and are alike in construction, and have a central hole to receive the before mentioned bushing 21 through which the shaft 10 extends, and

also a series of are shaped slots 15 serve to receive the end portions 16l6'-of the sheet metal segments 17. These segments are made of sheet metal and when blanked out are also stamped to curve the same so that their end portions will register withthe curved slotsin'the insulating disks and so that when the several metal segments are assembled between the said disks they will form a hollow'cylindrical or hub portion intermediate of said disks. are alike in size and construction and by result of the equally spaced distances a, between the curved slots 15 in the insulating disks 14, said segments are made to register one with theother to form a hollow cylinder, the adjacent edge portions being spaced one from the other to insure each segment forming. an entirely separate and independent metal and electrical contact for'the brushes of the motor. The projected end portion 18 Said segments of the respective segments 17 are turned out and over' upon the outer sides of. the

said disks,-while the shanks 19 extending from the opposite end portion of the segments are similarly bent out and down upon the side face of the, other fiber insulating disk. The bending over of these two extensions servesto firmly set the insulating disk up .St the shouiders' 20 (if the ends of the segiiienie, thereby'fi rm-ly securing the several gieets together." The "extreme end of the extensies 19 b1" the segments serves as the terminal 13 with which the ends of. the'wire windings are securely connected.

The bushing 21 is shouldered as at 23 to sit against the disks 14, and when assembled the outer ends of the bushing are turned over upon. the face of the disks toform a flange 22 to moresecureiy held the parts in position. The hole through the bushing serves to eccommedste themotor shzutt t0 which it may be held by friction or other suitable means.

. Having thus described my invention What I dleim and desire to secure by Letters Patent is':--

i. A commutator comprising at pair of end disks 9f insulating material with e centrai heie therethrough, and having a series of shaped slots, curved sheet metal segments having their ends fitted in the slots of the disks and having extensions passed threugh the said slots of the disks and bent over upon the eutside to securely hold the parts together, seedsegments being separated one from the other in a Way t0 form van open space between the adjacent edge 'portlons 0f the segments to "prevent dirt from lodging therein.

2. A'commutetor comprising a pair of insulating disks having a series of are shaped slots therein curved sheet metal segments having their ends fitted in the slots of the disks and having extensions passed tiimugh the said slots and bent over upon the out side to securely held the parts together, said segments being separated one from the other in a Way to form an open space between the adjacent edge portions of the segments and likewise a central hollow space Within the hub or cylinder formed by the segments. Si. ed at Bridgeport in the county of Fain eid and State of Connecticutthis 7th day of August, A. D. 1912.

WILLIAM G. HALL. Witnesses C. M. NEWMAN, RUTH M. Women. 

